600 PLANT GROWTH AND PLANT COMMUNITIES 



group, can form new associations, or else be relegated as relicts within 

 one association or even on the contact zone between two of them. 



References 



Aubreville, A., 1949. Climats, forets et desertification de I'Afrique tropicale. (Paris, 



Soc. Edit. Geogr., Maritimes et Coloniales). 

 Beard, J. S., 1944. "Climax Vegetation in Tropical America," Ecology 25, 127. 

 Braun, E. L., 1935. "The Undifferentiated Deciduous Forest Climax and the 



Association-Segregate," Ecology 16, 514. 

 Braun, E. L., 1938. "Deciduous Forest Climaxes," Ecology 19, 515. 

 Braun, E. L., 1941. "The Differentiation of the Deciduous Forest of the Eastern 



United States," Ohio J. Sci. 41, 235. 

 Braun, E. L., 1950. Deciduous Forests of Eastern North America (Phila., Blakis- 



ton). 

 Braun-Blanquet, J., 1928. Pftanzensoziologie. Grundziige der Vegetationskunde. 



(Berlin, Springer). 

 Braun-Blanquet, J., 1932. Plant Sociology, trans, by H. S. Conard and G. D. Fuller 



(N.Y., McGraw-Hill). 

 Braun-Blanquet, J., 1936. "La chenaie d'yeuse mediterraneenne ( Quercion ilicis)," 



Monographie phytosociologique. Conim. Sta. Inter. Geobot. Medit. Alpine 



45, 1. 

 Braun-Blanquet, J., 1951. Pftanzensoziologie (Wien, Springer- Verlag ) . 

 Brito da Cunha, A., and Dobzhansky, T., 1954. "A Further Study of Chromosomal 



Polymorphism in Drosophila willistoni in Its Relation to the Environment," 



Evolution 8, 119. 

 Brito da Cunha, A., Dobzhansky, T., Pavlovsky, O., and Spassky, B., 1959. 



"Genetics of Natural Populations, XXVIII: Supplementary Data on the 



Chromosomal Polymorphism in Drosophila willistoni in Its Relation to the 



Environment," Evolution 13, 389. 

 Cain, S. A., 1939. "The Climax and Its Complexities," Am. Mid. Nat. 21, 146. 

 Cain, S. A., 1943. "Sample-Plot Technique Applied to Alpine Vegetation in 



Wyoming," Am. J. Bot. 30, 240. 

 Cain, S. A., 1944. Foundations of Plant Geography (N. Y., Harper). 

 Cain, S. A., 1950. "Life-Forms and Phytoclimate," Bot. Rev. 16, 1. 

 Cain, S. A., Castro, G. M. de Oliveira, Pires, J. M., and da Silva, N. T., 1956. 



"Application of Some Phytosociological Techniques to Brazilian Rain Forest," 



Am. J. Bot. 43, 911. 

 Cain, S. A., and Castro, G. M. de Oliveira, 1959. Manual of Vegetation Analysis 



(N. ¥., Harper). 

 Ceballos, L. y Ortuiio, F., 1951. Vegetacion y Flora Forestal de las Canarias Occi- 



dentales (Madrid, Inst. For. Investig. Exper). 

 Clements, F. E., 1936. "Nature and Strvicture of the Climax," /. Ecol. 24, 253. 

 Cuatrecasas, J., 1934. Observaciones geobotdnicas en Colombia (Madrid, Trabajos 



del Museo Nacional de Ciencias Naturales, Ser. Botanica, 27). 

 Curtis, J. T., 1959. The Vegetation of Wisconsin: An Ordination of Plant Com- 

 munities (Madison, U. of Wisconsin Press). 

 Dahl, E., 1956. Rondane: Mountain Vegetation in South Norway and Its Relation 



to the Environment (Oslo, Norske Videnskaps-Akademi), I. Mat.-Naturv. 



Klasse, 1956, No. 3. 



